Motorcycle Maintenance and Oil Information for 2005 Hyosung GT 650 S Comet 647
Planning maintenance for the 2005 Hyosung GT 650 S Comet 647 begins with matching the lubricant to the exact engine application. Use the product listing as a reference and the manufacturer’s instructions for the correct oil-change procedure.
What type of engine oil does a 2005 Hyosung GT 650 S Comet 647 need?
For this motorcycle, the catalog shows 10W-40, 15W-50 among its engine-oil grades. The matching product listing includes 10W-40 Synthetic Metric Motorcycle Oil, 15W-50 Synthetic Metric Motorcycle Oil. Confirm the manufacturer’s complete oil specification before using a listed product.
What is the engine oil capacity for a 2005 Hyosung GT 650 S Comet 647?
The listed engine-oil capacity for this vehicle is 3.38 quarts.

